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Have You Got It?

Can you explain the strategy for winning this game with any target?

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Nim

Start with any number of counters in any number of piles. 2 players take it in turns to remove any number of counters from a single pile. The loser is the player who takes the last counter.

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FEMTO

A new card game for two players.

18 Hole Light Golf

Stage: 1, 2, 3 and 4 Challenge Level: Challenge Level:1

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Try to switch off all the lights. Plan ahead and you will often beat the par score set by the computer.
 
Do you think all possible light patterns can be reached? Would you need to check all of them? Can you think of a small set of patterns which, if they were all reachable, would mean that all patterns were reachable?

Another version of this game is 9 Hole Light Golf, which can be found here.